Open FB2 files online
FB2 is an XML-based e-book format popular for its clean, structured markup. The viewer shows its metadata, cover, chapters, poetry and embedded images in a clean reader.
Drop a FB2 file to open it
or click to choose — everything stays on your device
Choose file🔒 100% private — files never leave your browser
Or turn FB2 into an image — snapshot the preview, add arrows or notes, and download a PNG.
What is a FB2 file?
FB2 is an XML-based e-book format popular for its clean, structured markup. The viewer shows its metadata, cover, chapters, poetry and embedded images in a clean reader. The .FB2 extension identifies a FictionBook 2.0 file, which is served with the application/x-fictionbook+xml media type. You can open it here instantly — drop the file into the box above and it renders in your browser. Nothing is uploaded.
Besides this free online viewer, you can open FictionBook (FB2) files in desktop apps such as FBReader, Calibre, Cool Reader — but here all you need is a web browser.
Quick facts
| Format | FictionBook (FB2) — FictionBook 2.0 |
|---|---|
| File extensions | .fb2 |
| MIME type | application/x-fictionbook+xml |
| Developer | Dmitry Gribov |
| Category | E-books & comics |
| Also opens in | FBReader, Calibre, Cool Reader |
How to open a FB2 file online
- Click Choose file above, or drag your FB2 file onto the box.
- The right viewer loads automatically and renders your file.
- Read, scroll or page through it. To open a different file, choose Open another file.
100% private — files never leave your browser.
Libraries used to render FB2 in the browser
This viewer is built entirely with open-source JavaScript that runs in your browser:
Frequently asked questions
What is a .FB2 file?
A .FB2 file is a FictionBook 2.0, identified by the application/x-fictionbook+xml media type. You can open and read it instantly in the viewer above without installing anything.
What programs open FB2 files?
On the desktop, FB2 files typically open in FBReader, Calibre, Cool Reader. Online, this page opens them in any modern browser — nothing to download.
How do I convert FB2 to an image?
Use Snapshot to capture the FB2 preview, optionally add arrows, text or highlights, then download it as a PNG image.
Is it safe to open my FB2 file here?
Yes. The file is read and rendered entirely by JavaScript inside your own browser. It is never uploaded to a server, so nothing leaves your device.
Do I need to install anything to view a FB2 file?
No. There is nothing to install and no account to create. Open the page, drop your file, and it displays instantly.
Does it work on my phone or iPad?
Yes. The viewer is fully responsive and works in modern mobile and tablet browsers such as Safari and Chrome.
Is there a file size limit?
There is no hard limit, but very large files depend on your device’s memory. Big files are processed in the background so the page stays responsive.